• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An extruder machine for processing thermoplastic materials such as low density polyethylene, the extruder incorporating a body having a bore therethrough with a rotor or screw journalled therein. The rotor has several successive mixing and pumping sections. The mixing sections on the rotor are multiple flighted defining primary and secondary channels having their discharge and entrances respectively blocked or restricted by annular dam arrangements. The rotor includes a plurality of adjustable dams, arranged across the channels, permitting a variation in the degree of homogenization which may be performed upon the extrudite. The dams may be radially displaceable to vary the distance between the radially outer surface of the dam and the surface of the bore.
    公开号:SU990073A3
    申请号:SU792818705
    申请日:1979-09-25
    公开日:1983-01-15
    发明作者:Холд Питер；Тадмор Зехев；Рудольф Шарер Ганс
    申请人:Юсм Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to a chemical process (1) and can be used in polymer engineering for the extrusion processing of a polymer thermoplastic material. A known extrusion machine for processing a thermoplastic material, comprising a housing made with a bore along its longitudinal axis, a rotor equipped with at least one with a spiral blade and mounted rotatably in the bore of the housing, the loading and unloading nozzles and fixed partitions in the rotor channel. The effect on the thermoplastic material is improved by the back pressure, which is provided due to the stationary leo-townships of the 9th rotor channel of the Cl. The disadvantage of the known extrusion machine is the Cash efficiency of the mechanical shear of the thermoplastic polymer due to the absence of polymer flow from one channel to another. a machine for processing thermoplastic material, comprising a housing made with a bore along its longitudinal axis, a rotor equipped with at least one A spiral nozzle mounted and rotatably in the bore of the housing; a loading nozzle located at one end of the case and communicating with the boring; and a discharge nozzle located at the opposite end of the case, at least one partition wall placed between the loading and unloading nozzles. and adjacent to the partition wall and located in the screw channel at least between one pair of spiral blades of the transverse partition. In such an extrusion machine, the thermoplastic polymer during its movement through the rotor undergoes melting, homogenization and shear deformations, the intensity of which is increased due to the creation of a reverse pressure and the possibility of polymer flow through the separating and transverse partitions from one screw channel to another 2.
    A disadvantage of the known extrusion machine is that it does not provide for the possibility of changing about (5 times the pressure and degree of homogenization, which is necessary when processing various types of thermoplastic material (polyethylene)
    The purpose of the invention is to expand the technological capabilities of the machine by providing an effective change in the degree of homogenization.
    This goal is achieved by the fact that in an extrusion machine for processing a thermoplastic material comprising a body made with a bore along its longitudinal axis, a rotor equipped with at least one helical blade and mounted rotatably in the body bore, the loading nozzle is located at one end of the body and communicated with the bore, and the discharge nipple, located on the opposite end of the housing, at least one partition wall, located between the loading and unloading tutserami and adjacent the partition wall and arranged in a helical channel between at least one pair of helical blades transversal partition, the partition is formed as a ring disposed around the rotor, and the transverse partition is mounted with the possibility of adjusting its position. radially relative to the longitudinal axis of the rotor.
    In addition, the transverse partition is mounted with the possibility of adjusting its position in the angular direction relative to the longitudinal axis of the rotor by rotating it relative to an axis located radially to the longitudinal axis of the rotor.
    The transverse partition is made with holes for mounting bolts and is mounted in a hole that is made in the rotor.
    The transverse partition is installed on adjusting pads placed in the hole of the rotor.
    The transverse partition has an outer surface of a curvilinear shape, COOT does not have an enclosure boring contour.
    Fig. 1 shows an extrusion machine, a general view, a section; figure 2 is a section of the rotor with dividing and transverse partitions; Fig.3 transverse partition.
    The extrusion machine comprises a housing 1, made with a bore 2 along its longitudinal axis, and a rotor 3, placed in the bore 2 of the housing 1. In the housing 1, the channels 4 are made for flow to transmit. There is heat from the fluid adjacent to the bore 2. GS-tor 3 mounted rotatably from the engine 5 and the gear train 6. The charging nipple 7, located on one end of the housing 1, communicates with the bore 2 through
    the material supply holes 8,, at the opposite end of the housing 1 is placed a discharge nipple 9 for unloading the processed material and feeding it to the receiving device
    (not shown)
    The main part of the housing 1 and the rotor 3 of the extrusion machine comprise a plurality of separate sections, which include the feeding and homogenizing
    (mixing) section 10, homogenizing (mixing) sections 11-13 and final injection section 14. Separate sections are mainly separated by dividing partitions made in the form of rings 15. The rotor 3 is provided with one or more primary helical blades 16 and one or more secondary helical blades 17, which have the same length with the rotor 3 along its feeding, mixing and pumping
    sections. Primary blades 16 in one section can include secondary blades 17 in adjacent sections without breaks. Rotor 3 and blades
    16 and 17 are intended for reception
    material loaded through loading nozzle 7, such as molten or semi-molten thermoplastic material, for example
    polyethylene to mix it and pump it downstream to homogenizing sections 11-13 of the extrusion machine.
    Each of the downstream homogenizing surgeons (mixing) sections 11-13 contains at least one pair of blades, preferably two to four pairs of Bottom blades of FIG. 2 shows two pairs: primary 16 and
    secondary 17 blades. The latter define alternating primary 18 and secondary 19 kangs. The primary channel 18 passes downstream and, after certain limiters, becomes the secondary channel 19. In this
    time, as the material passes longitudinally along the bore 2, it has to pass, for example, one of the primary channels f 18. The pressure arising in the thermoplastic material in
    channel 18 overlaps at the end of the section with a generally circular ring 15. At least one adjustable transverse partition is located in the area for placing the ring 15
    20, mounted in the bore 21 of the rotor 3, which defines the end of the secondary channel on the rotor 3, allows the flow of material in the secondary channel 19 to pass through the throttles
    in a manner through the cross section m, the primary channel 18. The rotor 3 may have a plurality of adjustable partitions 20 between adjacent blades t to FIG. 2 shows only a single baffle), and the adjustable baffles 20 allow for a wide variation in the mixing and homogenization of the extrusion machine. Adjustable partition 201fig contains a base 22, preferably round. The baffle 20 extends across the base 22, generally perpendicular to it, and has a curved upper surface 23, which is the radially most distant adjustable baffle 20 when it is mounted on the rotor 3. The base 22 has at least one pair of holes 24 for bed bolts 1 shown). The adjustment pad 25 (Fig. 3) is located under the adjustable partition 20, and also has at least one pair of bolt holes 26 that correspond to the bolt holes 24 in the base 22 of the adjustable partition 20. Each adjustable partition 20 is located in the hole 21 The rotor 3 has holes 27 (Fig. 2) for bolts for securing the baffle 20. Adjustable baffles 20 are adjusted by removing the bolts that pass through the base 22 into the threaded holes by adding or removing one more than the shims 25, due to which the position of the surface 23 of the adjustable partition 20 relative to the rotor 3 is changed. The adjustable partitions 20 can be rotated like a screw about a radially directed axis with respect to the rotor 3. To provide other ways of changing the degree of homogenization, carried out on extruded material. Each adjustment gasket 25 has the same igura tion as the hole 21 in which it is located in the rotor 3 to ensure simple adjustment of the partition 20. In order to adjust the position of the partitions 20 by their radial or rotational movement, the extrusion machine includes a mechanical link that passes through the channel 28 in the rotor 3 and the inner ends of the adjustable partitions 20, allowing the remote controlled movement of the partitions 20 without applying excessive force, the Extrusion Machine works as follows ohm The material supplied from the charging nozzle 7 is captured by the rotor 3 and moves through the feed and homogenizing sections 10-14 to the discharge nozzle 9, the passage, along the primary and secondary channels 18 and 19 formed by the primary and secondary blades 16 and 17. Channel 18 the rings 15 overlap and the end of the secondary channel 19 is defined by a transverse partition 20. The lower part of the secondary blade 17, adjacent to the secondary channel 19, and the pressure difference between the primary 18 and the secondary 19 channels causes the extruded material to flow through the secondary 17. The material that flows from the secondary channel 19 through the adjustable partition 20 flows into the primary channel 18. Therefore, the material flows along the blade 17 (arrows A in Fig. 2), which separates the primary 18 and the secondary 19 channels, and then through the adjustable partition 20 (arrows B in FIG. 2). The secondary blade 17. between the two channels has a larger gap between it and the walls of the bore 2 than between the ring 15 or the primary blade 16 and the walls of the bore 2. The magnitude of the shear stress needed to homogenize the material being processed (for example, polyethylene) determines the number of blades and therefore, the number of channels and homogenizing sections required in the rotor 3. The magnitude of the shear stress, which can be communicated to the material in any homogenizing section 11-13, is limited by the ability of the channels for flow food, the heat transfer obes- / ensures, adequate cooling. The heat transfer between the thermoplastic material to be treated and the cooling medium contained in the fluid transfer channels 4 for the heat transfer medium is improved by using the rotor 3 with at least 2 to 4 pairs of blades mainly spirited around it. to increase the frequency with which the wall of the bore 2 is cleared from the material. Shear rate is the rate at which a material is deformed by shear. It depends on the geometry and speed of the mouth-mouth 3, the back pressure caused by adjustable partitions in the fig-like areas of each homogenizing section. The size of the external gap of the partition 20 can be calculated to establish an equilibrium between the cooling ability (heat transfer capability) and the shear operation expended in the material to establish optimal parameters. Gap between
    the blade 17 in the gap between the primary 18 and the secondary channel 19 has an effect on the material, since it intersects them across the homogenizing sections. The depth of the primary 18 and secondary 19 channels may be different in order to cause material exchange between the channels. However, in the production of low density polymers such as polyethylene, complete homogenization is undesirable. To this end, the rotor 3 may have several adjustable partitions 20.
    For highly viscous materials, homogenization is performed in an extrusion machine with a fully removed adjustable baffle 20 and replaced with a variety of shims 25 to ensure a smooth passage of the material to be extruded.
    Thus, this extrusion per machine provides an effective Change in the degree of homogenization of the processed thermoplastics. This is accomplished by installing a radically adjustable partition in the rotor of the extrusion machine to provide certain gaps between the partition and the walls of the housing bore and rotating the partition to change the blockage of the flow of the material to be extruded in the rotor channels, thereby allowing the extrusion machine to control mixing and extrusion for wide gamma thermoplastics in an economical and efficient manner.
    权利要求:
    Claims (5)
    [1]
    1. An extrusion machine for processing a thermoplastic material, comprising a housing made with a bore along its longitudinal axis, a rotor equipped with at least one spiral blade and mounted rotatably in the housing bore, a loading nozzle located at one end of the housing and communicated with boring and unloading piping, located on the opposite end of the body, at least one partition wall, located between the loading and unloading nipples, and adjoining the section partition wall and a transverse partition located in the screw channel between at least one pair of spiral blades, which, in order to expand the technological capabilities of the machine by providing an effective change in the degree of homogenization, the separation partition is made in the form of a ring located around the rotor, and the transverse partition is mounted so as to adjust its position in the radial direction relative to the longitudinal axis of the rotor.
    [2]
    2. The machine according to claim 1, wherein the transverse partition is mounted with the possibility of adjusting its position in the angular direction relative to the longitudinal axis of the rotor by rotating it relative to an axis radially to the longitudinal axis of the rotor.
    [3]
    3. Machine on PP. 1 and 2, characterized in that the transverse partition is provided with openings for fastening bolts
    and mounted in the hole, which is made in the rotor.
    [4]
    4. Machine on PP. 1-3, about tl and -. This is due to the fact that the transverse partition is installed on adjusting gaskets placed in the rotor hole.
    [5]
    5. Machine on PP. 1-4, characterized in that it is transverse
    the partition has an outer surface of a curvilinear shape corresponding to the contour of the bore of the case.
    Sources of information taken into account in the examination
    1. US Patent 3,850,414, cl. 259-191, published. 1974.
    2. Patent of the USSR 349145,
    cl. In 29 F 3/02, 1970 (prototype).
    J 13
    17
    ff
    类似技术:
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    US3799510A|1974-03-26|Extrusion of plastic and the like
    US5152163A|1992-10-06|Continuous extrusion apparatus
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    US5723153A|1998-03-03|Extrusion apparatus having a nozzle-headed drum
    US4411532A|1983-10-25|Rotary processor
    US4394980A|1983-07-26|Device for the simultaneous and continuous feeding of pulverulent solids and of liquids into treatment machines
    SU990073A3|1983-01-15|Extrusion machine for processing thermoplastic material
    US4514090A|1985-04-30|Apparatus for processing viscous substances or substances which become viscous through processing
    US4389119A|1983-06-21|Rotary processors
    EP0683720A1|1995-11-29|Symmetrical flow extrusion manifold
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    US4444507A|1984-04-24|Apparatus and method for melting and conveying plasticated material
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    US4906102A|1990-03-06|Apparatus for mixing thermoplastified synthetic resins
    US4289410A|1981-09-15|Worm feed extruder for processing synthetics, rubber and like materials
    同族专利:
    公开号 | 公开日
    AU5111179A|1980-04-03|
    AU537892B2|1984-07-19|
    MX149833A|1983-12-28|
    US4213710A|1980-07-22|
    FR2437287B1|1984-04-27|
    ES484835A1|1980-04-16|
    FR2437287A1|1980-04-25|
    SE437632B|1985-03-11|
    NL7907027A|1980-03-28|
    IT7925991D0|1979-09-25|
    CA1134578A|1982-11-02|
    BE878992A|1980-01-16|
    JPS5546952A|1980-04-02|
    LU81723A1|1980-01-24|
    DE2937688C2|1992-11-19|
    GB2032291B|1982-08-11|
    SE7907928L|1980-03-27|
    GB2032291A|1980-05-08|
    IT1164514B|1987-04-15|
    DD146024A5|1981-01-21|
    DE2937688A1|1980-04-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2518124A|1948-02-10|1950-08-08|Corbett Harold|Machine for mixing and molding plastic materials|
    DE1083535B|1956-04-11|1960-06-15|Alpine Aktien Ges Maschinenfab|Screw extruder for pressing thermoplastics|
    US3411179A|1966-04-12|1968-11-19|Frank W Egan & Company|Extruder screw mixing section|
    DE1778076A1|1968-03-26|1971-07-08|Doboczky Zoltan Dipl Ing|Method and device for processing thermoplastics, in particular hard and soft PVC|
    US3632254A|1970-01-14|1972-01-04|Dart Ind Inc|Apparatus for producing fiber reinforced plastics|
    DE2124466B2|1971-05-17|1978-09-28|Fried. Krupp Gmbh, 4300 Essen|Extruder for processing plastics and elastomers|
    JPS49130953A|1973-04-07|1974-12-16|
    DE2354183A1|1973-10-30|1975-05-07|Krupp Gmbh|Extruder screw - with limited part thread of reduced pitch at front end|
    DE2356313A1|1973-11-10|1975-05-15|Krupp Gmbh|Screw press for processing thermoplastics or elastomers - in single-screw extruder, has several overflow flight lands arranged in series to improve homogenising action|
    IT999896B|1973-12-05|1976-03-10|Benadi A|EXTRUDER WITH ONE OR MORE SCREWS WITH COUNTERPRESSION DEVICE|
    DE2362806A1|1973-12-18|1975-06-19|Krupp Gmbh|Single-screw extruder with conveyor screw land and by-pass land - the latter being designed as funnel-shaped twin land|
    DE2542515C3|1975-09-24|1980-09-04|Paul Troester Maschinenfabrik, 3000 Hannover|Extruder screw for processing plastics and rubber|DE3318793A1|1983-05-24|1985-01-24|KHD Humboldt Wedag AG, 5000 Köln|DEVICE FOR DEHUMIDIFYING SLUDGE|
    US4723847A|1987-02-17|1988-02-09|Dray Robert F|Apparatus for varying pressure within a screw channel|
    US4926790A|1988-09-22|1990-05-22|Xerox Corporation|Auger unit|
    US5356208A|1993-04-07|1994-10-18|Zehev Tadmor|Screw element having shearing and scraping flights|
    US6017145A|1994-12-30|2000-01-25|The Dow Chemical Company|Extruder screw|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/946,093|US4213710A|1978-09-26|1978-09-26|Adjustable homogenization extruder|
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